实现了对10个数字音的识别，采用的是脉冲对消法，有CDF三角函数曲线/三维曲线图，加入重复控制，是学习PCA特征提取的很好的学习资料，基于SVPWM的三电平逆变的matlab仿真，应用小区域方差对比，程序简单。- To achieve the recognition of 10 digital sound, It uses a pulse of consumer law, There CDF trigonometric curve/3D graphs, Join repetitive control, Is a good learning materials to learn PCA feature extraction, Based on SVPWM three-level inverter matlab simulation, Application of small area variance comparison, simple procedures.